IICRC MRS MOLD REMEDIATION TEST
ACTUAL STUDY GUIDE LATEST UPDATE
2026/2027 GRADED A+ .
, 1. Containment: To prevent cross-contamination- Containment is critical in preventing the spread of mold spores to unattected areas, thus managing cross-
contamination.
2. Pressure differential during remediation: Negative pressure of 0.05 inches of water column
3. Containment barrier material: 6-mil polyethylene sheeting
4. Airborne spores control method ✔✔ High-eflciency particulate air (HEPA) filtering
5. Best practice for removing contaminated materials ✔✔ Gently cutting and removing to
minimize dust
6. Air monitoring timing ✔✔ Throughout the project
7. Recommended respirator for mold removal ✔✔ P100 respirator
8. Effective cleaning agents against mold ✔✔ Household detergent, Vinegar, Sodium hypochlorite
(bleach). While household detergent and vinegar have some eflcacy, sodium hypochlorite is widely used due to its ettectiveness against mold, although it should be used
properly.
9. Critical factor to prevent mold growth in water-damaged buildings ✔✔ Humidity
control
10. Strategy for managing mold on porous materials ✔✔ Removal and disposal - Porous materials such as carpets can trap mold spores and
are often best removed and replaced.
11. Significance of establishing negative air pressure in containment ✔✔ To prevent external pollutants from entering ✔✔ Establishing negative air
pressure prevents external pollutants and mold spores from entering the containment area, protecting the cleanup ettort.
12. Non-indicator of mold infestation ✔✔ High levels of UV light - High levels of UV light are not an
indicator of mold infestation, whereas visible mold, musty odors, and water stains are consistent signs.
13. Containment system for larger remediation projects ✔✔ Negative pressure containment
- Negative pressure containment ettectively manages larger areas and keeps mold spores contained during remedi-ation.
14. Role of a dehumidifier in remediation ✔✔ It reduces humidity to inhibit mold growth - Dehumid-
ifiers reduce humidity levels, inhibiting the growth of mold by providing a less favorable environment.
15. Scenario for employing bio-remediation ✔✔ When physical removal is impractical - Bio-reme-diation uses microbial action to break down
complex mold spores when physical removal is challenging.
16. First step in mold remediation ✔✔ Not specified in the provided notes.
17. Assess the extent of water damage ✔✔ Assessing the extent of water damage is essential to
determine the necessary remediation measures and containment requirements.
ACTUAL STUDY GUIDE LATEST UPDATE
2026/2027 GRADED A+ .
, 1. Containment: To prevent cross-contamination- Containment is critical in preventing the spread of mold spores to unattected areas, thus managing cross-
contamination.
2. Pressure differential during remediation: Negative pressure of 0.05 inches of water column
3. Containment barrier material: 6-mil polyethylene sheeting
4. Airborne spores control method ✔✔ High-eflciency particulate air (HEPA) filtering
5. Best practice for removing contaminated materials ✔✔ Gently cutting and removing to
minimize dust
6. Air monitoring timing ✔✔ Throughout the project
7. Recommended respirator for mold removal ✔✔ P100 respirator
8. Effective cleaning agents against mold ✔✔ Household detergent, Vinegar, Sodium hypochlorite
(bleach). While household detergent and vinegar have some eflcacy, sodium hypochlorite is widely used due to its ettectiveness against mold, although it should be used
properly.
9. Critical factor to prevent mold growth in water-damaged buildings ✔✔ Humidity
control
10. Strategy for managing mold on porous materials ✔✔ Removal and disposal - Porous materials such as carpets can trap mold spores and
are often best removed and replaced.
11. Significance of establishing negative air pressure in containment ✔✔ To prevent external pollutants from entering ✔✔ Establishing negative air
pressure prevents external pollutants and mold spores from entering the containment area, protecting the cleanup ettort.
12. Non-indicator of mold infestation ✔✔ High levels of UV light - High levels of UV light are not an
indicator of mold infestation, whereas visible mold, musty odors, and water stains are consistent signs.
13. Containment system for larger remediation projects ✔✔ Negative pressure containment
- Negative pressure containment ettectively manages larger areas and keeps mold spores contained during remedi-ation.
14. Role of a dehumidifier in remediation ✔✔ It reduces humidity to inhibit mold growth - Dehumid-
ifiers reduce humidity levels, inhibiting the growth of mold by providing a less favorable environment.
15. Scenario for employing bio-remediation ✔✔ When physical removal is impractical - Bio-reme-diation uses microbial action to break down
complex mold spores when physical removal is challenging.
16. First step in mold remediation ✔✔ Not specified in the provided notes.
17. Assess the extent of water damage ✔✔ Assessing the extent of water damage is essential to
determine the necessary remediation measures and containment requirements.
